No abstract available
MeSH terms
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Child, Preschool
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Female
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Humans
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Influenza A Virus, H1N1 Subtype / genetics*
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Influenza A Virus, H1N1 Subtype / isolation & purification
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Influenza, Human / virology*
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Nasopharynx / virology
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Point Mutation
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Polymorphism, Genetic*
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RNA, Viral / genetics
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Reverse Transcriptase Polymerase Chain Reaction
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Sequence Analysis, DNA
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Viral Matrix Proteins / genetics*
Substances
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M1 protein, Influenza A virus
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RNA, Viral
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Viral Matrix Proteins